So-called "third-world, mismanaged poor" countries have been hit the least of all so far with Covid. Haiti has little healthcare system to speak of and used voodoo to treat patients yet they have one of the lowest rates of coronavirus in the world.
Haiti is good at Covid, but it's not Nigeria type good. Nigeria has 207 million people packed into a country 1/10 the size of the US and they only have 1,093 total deaths! We lose that many in a day. Heck of a job for Nigeria with 0.11% of cases, but 2.7% of the world population. 25/0.11 = 227. They are 227 times better than we are. Those are the numbers we have.